从带有tableview并且使用Mj下拉刷新的视图调用popViewControllerAnimated的时候,控制台打印这个: An instance 0x15d7aa00 of class UITableView was deallocated while key value observers were still registered with it. Observation info was leaked, and may even become mistakenly attached…

An instance 0xca90200 of class UITableView was deallocated while key value observers were still registered with it. Observation info was leaked, and may even become mistakenly attached to some other object. Set a breakpoint on NSKVODeallocateBreak to…

An instance 0xca90200 of class UITableView was deallocated while key value observers were still registered with it. Observation info was leaked, and may even become mistakenly attached to some other object. Set a breakpoint on NSKVODeallocateBreak to…

在iOS和html混编的时候,当用iOS原生的navigation导航pop回去的时候,出现 *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'An instance 0x155e74a0 of class UIWebView was deallocated while key value observers were still registered with i…

这个错误从字面上来看就是有一个实例由于被observing而无法被释放. 具体原因可能是该对象添加了一个oberver.所以释放的时候要先取消observer. 具体方法是在 dealloc 方法中: - (void)dealloc { [object removeObserver:self forKeyPath:@"aPath"]; } ARC 下不能调用 super 的 dealloc 方法.…

  上周迟到了,周末去参加OSC源创会了,还是有点启发的.但这不是重点,重点是 上一篇我只是实现了一首歌曲的在线播放,这肯定是不够的.这一篇博客主要是实现了多首歌曲的顺序播放以及上一首和下一首切换. 先看一下效果图 1.准备工作 (1)数据源    我把歌曲列表存在本地songList.json文件里.用FHAlbumModel管理歌曲. FHAlbumModel.h #import <Foundation/Foundation.h> @interface FHAlbumModel : NSO…

KVO的原理: 只要给一个对象注册一个监听, 那么在运行时, 系统就会自动给该对象生成一个子类对象, (格式如:NSKVONotifying_className), 并且重写自动生成的子类对象的被监听属性的set方法, 然后在set方法中通知监听者 // // ViewController.m // KVO内部实现原理 // // Created by sw on 15/4/13. // Copyright © 2015年 sw. All rights reserved. // #import…

KVO == Key Value Observing 作用: 可以监听某个对象属性的改变 一.使用KVO Person *p = [Person new]; p.name = @"chg"; p.age = ; // 给p这个对象添加一个监听 , 监听p对象的age属性的改变, 只要age属性改变就通知self [p addObserver:self forKeyPath:@"age" options:NSKeyValueObservingOptionOld | N…

1.KVO KVO 是 Key-Value Observing 的简写,是键值观察的意思,属于 runtime 方法.Key Value Observing 顾名思义就是一种 observer 模式用于监听属性变量值的变化,也是运行时的方法,当实例变量改变时,系统会自动采取一些动作.KVO 跟 NSNotification 有很多相似的地方,用 addObserver:forKeyPath:options:context: 去 start observer, 用 removeObserver:f…

https://segmentfault.com/a/1190000002401961  音量调节https://www.google.com/?gws_rd=ssl#newwindow=1&q=ios+%E9%9F%B3%E9%87%8F%E6%8E%A7%E5%88%B6https://www.oschina.net/ios/codingList/399/ios-video?sort=view http://www.fantageek.com/blog/2014/09/07/avfounda…